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Finding the Fourth Proportional to 85,159.81, 117,511.72 and 52,449.01

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Solution

The fourth proportional to 85,159.81, 117,511.72 and 52,449.01 is: 72,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,159.81 : 117,511.72 = 52,449.01 : x
  2. Step 2: Convert to fraction form
    85,159.81/117,511.72 = 52,449.01/x
  3. Step 3: Cross multiply
    85,159.81x = 117,511.72 × 52,449.01
  4. Step 4: Simplify right side
    85,159.81x = 6,163,373,156.03
  5. Step 5: Solve for x
    x = 6,163,373,156.03/85,159.81
  6. Step 6: Final answer
    x = 72,374.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.